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Ferromagnetic properties of GdN thin films studied by temperature dependent circular polarized spectroscopy
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10.1063/1.4746265
/content/aip/journal/apl/101/7/10.1063/1.4746265
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/7/10.1063/1.4746265
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Circularly polarized optical absorption spectra for 97-nm-thick GdN measured at different temperatures: (a) 300 K, (b) 100 K, (c) 30 K, and (d) 5 K.

Image of FIG. 2.
FIG. 2.

(a) Temperature dependent direct bandgap energy of 97-nm-thick GdN for LCP and RCP. ΔEg corresponds to the change in the bandgap energy versus the room-temperature value. (b) Temperature dependence of magnetization and circular dichroism of 97-nm-thick GdN. The magnetizations are normalized by the saturated value. The external magnetic field was applied in the plane.

Image of FIG. 3.
FIG. 3.

(a) Angular dependence of resonance field of FMR for AlN/GdN/AlN double heterostructure at T = 4.2 K. The external magnetic field was applied out-of-plane at −90° and 90°, in-plane at 0°. (b) Temperature dependence of resonance field of ESR (red symbols) and normalized magnetization (blue symbols) for AlN/GdN/AlN double heterostructure. The external magnetic field was applied in the plane.

Image of FIG. 4.
FIG. 4.

Temperature dependent direct bandgap energy: (a) 97-nm-thick GdN and (b) 48-nm-thick GdN.

Image of FIG. 5.
FIG. 5.

Magnetic-Hysteresis loops for 97-nm and 48 nm GdN thin films at 4.2 K. The external magnetic field was applied in the plane.

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/content/aip/journal/apl/101/7/10.1063/1.4746265
2012-08-13
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ferromagnetic properties of GdN thin films studied by temperature dependent circular polarized spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/7/10.1063/1.4746265
10.1063/1.4746265
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